oilcup

/ˈɔɪlˌkʌp/
noun
  1. A small container or cup that holds oil, used to lubricate machinery or parts of a machine.
    • She checked the oilcup on the fan and added a few drops of lubricant.
    • Each bearing on the old engine had its own oilcup to keep it running smoothly.
    • The mechanic filled the oilcup on the sewing machine before starting it.
Synonyms